This paper shows that under certain conditons it is possible to diminish and even eliminate the nonlinear distorsion of a peak envelope detector by biasing the diode adequately.
Frustration in the universities is matched by outrage among Tories, who are afraid of damaging standards and biasing the system against middle-class applicants.
This is just one neuron, but this process of weighting, summing, biasing and applying an activation function is computed for all neurons in a layer, and the values propagate forward in the network, one layer at a time.